no one under 50 farms the fields. >>it poses the question, when the likes of mr li can work no more, who'll grow all the food? >>china is also prone to other hazards, from floods to landslides to drought. this year has wreakeddevastation on some key regions' wheat, corn and rice harvests and, as a consequence, prices have shot up. >>urbanisation and natural disasters aside, china's big agri-food players - with huge economies of scale - are at the forefront of securing the nation's food supplies; investing heavily in boosting yields, from seed technology to mechanisation. >>by promoting the use of technology and standardisation to improve our output, and to guarantee produce security, we can provide good, safe, nutritional agricultural produce for all. >>reporter: food is also now part of china's strategic overseas investment strategy - alongside mining and hi-tech.